When an immigrant is convicted of a crime of violence, they are subject to mandatory removal from the U.S. They are also ineligible for many kinds of relief from removal. If this has happened to you, however, there may still be hope.
The Deferred Action for Childhood Arrivals program (DACA) provides protection from deportation and grants work authorization to qualifying non-immigrants who were brought to the U.S. before age 16. Currently, the U.S. Citizenship and Immigration Services is no longer accepting new applications, although it is processing renewals. However, an April court decision, currently on hold, could potentially open the program up to new applicants.